Math Estimation 9b

Front

What is estimation in math?

Back

Estimation is a way of finding an approximate value that is close to the exact amount, often used to make quick calculations.

Front

How do you estimate the total cost of items?

Back

Round each item's price to the nearest whole number and then add them together.

Front

What is the closest estimate of 45 books in 13 boxes?

Back

More than 500 books.

Front

If Juni reads 11 pages a day, how many pages will she read in 6 days?

Back

About 60 pages.

Front

How do you estimate subtraction problems?

Back

Round each number to the nearest ten or hundred before subtracting.

Front

What is the closest estimate of 139 - 43?

Back

About 100.

Front

How do you estimate the number of people on a plane with 424 seats and 175 empty?

Back

Estimate by subtracting the empty seats from the total seats.

Front

What is the closest estimate of the total cost of three videos priced at $5.95, $9.19, and $12.89?

Back

About $6.00 + $9.00 + $13.00.

Front

What does 'rounding' mean in estimation?

Back

Rounding means adjusting a number to make it simpler and easier to work with, usually to the nearest ten or hundred.

Front

Why is estimation useful in everyday life?

Back

Estimation helps us make quick decisions and calculations without needing exact numbers.